1. to remove mist or condensation from a surface, especially a window or mirror
Usage: chiefly British; transitive verb

Examples

• She turned on the car's demister to demist the windshield.
• The bathroom mirror was fogged up, so I used a cloth to demist it.
• Modern cars have a button to demist the rear window quickly.
• He demisted the glasses with his breath and a soft cloth.
• The heating system helps demist the windows on cold mornings.